ISO1176: how to design the right solder pad for ISO1176

Wenle Liang

Part Number: ISO1176

In the datasheet of ISO1176, there are two kinds of solder pad recommended as showed below. In which circumstances are they used? Which one should I choose? My isolation voltage is 1.5 kV.

over 8 years ago

0 Clemens Ladisch over 8 years ago

Guru 298860 points

Normally, the solder pads are quite long (2 mm) to allow for tolerances when placing the chip. This results in a distance of 7.3 mm between the solder pads. However, if the safety standards you're using require a distance of more than 8 mm, then you use the "HV" option, which makes the solder pads shorter and requires more accuracy when placing the chip.

0 Wenle Liang over 8 years ago in reply to Clemens Ladisch

Intellectual 270 points

Is this length related to the isolation effect? Does "HV" mean "High voltage" ?

0 Clemens Ladisch over 8 years ago in reply to Wenle Liang

Guru 298860 points

Yes.

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ISO1176: how to design the right solder pad for ISO1176